Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5765549 | Respirator | Wolfgang Drews, Werner Jumpertz | 1998-06-16 |
| 5450844 | Locking device for the container of a gas mask and breathing equipment | Stephan Melzer, Hasso Weinmann, Wolfgang Drews | 1995-09-19 |
| 5291881 | Air cleaning cartridge for a gas mask and breathing equipment with an insert | Wolfgang Drews, Stephan Melzer, Hasso Weinmann | 1994-03-08 |
| 5194224 | Moisture indicator for a respiratory protection device | Claus-Bernd Plotz, Horst Wezurek | 1993-03-16 |
| 4805608 | Breathing apparatus | Wolfgang Eckstein | 1989-02-21 |